Guys, I had a big write up for the drive shaft replacement and I lost it because the "token expired". I am so mad... It will take me a while to rewrite it. It took me an hour to write it with details and I lost it
Anyway, in conclusion I installed the long driveshaft without removing the pipes and shields. It is possible. You have a few bolts that hold the TC frame support hidden behind the heat shields and pipes but it is manageable with a bit of effort. You will have to make a socket size hole in the heat shield, that's all and push the pipe a little to make room for the socket tool. You don't have to remove the rear drive shaft. Take only the bolts that connect it to the TC/flexdisk and the frame u support so you can fold it to make room for the TC to slide back.
Anyway, I will answer questions if you have any, I don't feel right now to rewrite again the one hour details experience.
So, I had a clicking noise which is not completely gone, most likely I have the chain problem as well, but I can live with that. I just didn't want to get stuck on the road when the splines were gone.
Tom, please comment on the conditions of my drive shaft splines if you still read this thread.

Thanks to everyone here that helped with tips and quick reply and to Tom for a very well done job.

PS, I had a friend that is a mechanic and he actually managed to pull the TC back without removing the pipes, shields and rear shaft. He was able to remove these hidden bolts. I wasn't home when he did it but when I got back 1 hour later he was done and I was happy. The whole job took a while but to remove the hidden bolts, put the new long driveshaft in and tide all the TC bolts back seems like was an 1 hour job. I finish the rest of the job... but that was easy.